Negative film masking apparatus for photographic printer

Details Negative film masking apparatus for photographic printer Negative film masking apparatus for photographic printer

1994-10-18

1997-04-08

Grimley, Arthur T.

Photocopying

Projection printing and copying cameras

Detailed holder for original

G03B 2758

Patent

active

056193050

ABSTRACT:
A negative film masking apparatus for use in a photographic printer comprises positioning pins arranged for projecting from the upper surface of the masking base to locate the negative film masking at a given position, detector switches provided for projecting from the upper surface of the masking base to detect the type of the negative film masking, and a lifting means for driving the positioning pins and the detector switches to project from the upper surface of the masking base.

REFERENCES:
patent: 4194836 (1980-03-01), Rapp et al.
patent: 4240744 (1980-12-01), Rapp et al.
patent: 4396281 (1983-08-01), Okabe et al.
patent: 4450536 (1984-05-01), Schroeder
patent: 5343273 (1994-08-01), Yamamoto et al.

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